Fig. 7.

Simulation of incident, absorbed and transmitted PAR levels at different heights above, inside and below a bent and upright rose canopy during the course of the day (2 October 2008). The PAR levels incident were sampled from readings of randomly distributed virtual sensors at specified heights above the floor (level incident above canopy: 1·8–1·82 m; bent canopy: 0·38–0·4 m; upright shoots: 0·7–0·72 m). Management scenarios were: (A) control, (B) reduced path width, (C) reduced LAI of bent canopy (for more details see text). BC, bent canopy; UR, upright canopy.